Asphalt mixture compaction rheological property testing device

Abstract

The utility model relates to the technical field of asphalt mixture performance testing, in particular to an asphalt mixture compaction rheological property testing device which comprises a rheological tester body, a transverse moving mechanism, a vertical moving mechanism, a rheometer sensor and an asphalt mixture loading plate, a testing chamber is formed in the rheology tester body, the asphalt mixture loading plate is arranged at the bottom of the testing chamber, the transverse moving mechanism is arranged at the top of the testing chamber, the transverse moving mechanism and the asphalt mixture loading plate are arranged in the same direction, and the vertical moving mechanism is connected with the transverse moving mechanism; the transverse moving mechanism and the vertical moving mechanism are connected with the rheometer sensor, so that the test position of the rheometer sensor and the pressing test are conveniently controlled, the test difficulty is reduced, and the test efficiency is improved; meanwhile, a plurality of to-be-tested samples can be selectively placed on the asphalt mixture loading plate for continuous testing, so that the testing efficiency is further improved, and the actual testing requirements are met.

Description

Technical Field

[0001] The utility model relates to the technical field of asphalt mixture performance testing, in particular to an asphalt mixture compaction rheological performance testing device. Background Art

[0002] Asphalt mixture is mainly composed of asphalt, coarse aggregate, fine aggregate and mineral powder. It is often used to construct road pavement. In order to ensure the quality of asphalt mixture, workers often need to test the asphalt mixture to ensure its reliable performance.

[0003] At present, it is usually chosen to test the target object by combining a rheometer sensor with a telescopic drive. For example, the Chinese invention patent application with application number 202210825476.3 provides a portable asphalt dynamic shear rheometer, which uses a mechanical structure module and a drive acquisition module to achieve the portability of the rheometer and reduce costs.

[0004] However, with existing rheometers, each test requires manual testing of the sample to be tested one by one, which is difficult to operate and has low test efficiency, and cannot meet actual testing needs. Utility Model Content

[0005] The purpose of the utility model is to provide a device for testing the rheological properties of asphalt mixture compaction, so as to solve the technical problem of low efficiency of the existing asphalt mixture compaction rheological properties test.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A device for testing the rheological properties of asphalt mixture compaction, comprising a rheological tester body, a lateral movement mechanism, a vertical movement mechanism, a rheometer sensor, and an asphalt mixture loading plate;

[0008] A test chamber is provided in the body of the rheology tester, the asphalt mixture loading plate is arranged at the bottom of the test chamber, the lateral moving mechanism is arranged at the top of the test chamber, the lateral moving mechanism and the asphalt mixture loading plate are arranged in the same direction, the vertical moving mechanism is connected to the lateral moving mechanism, the rheometer sensor is connected to the bottom of the vertical moving mechanism, and the rheometer sensor is located above the asphalt mixture loading plate.

[0009] It is further defined that a plurality of asphalt sample placement boxes are provided on the asphalt mixture loading plate, the plurality of asphalt sample placement boxes are spaced apart along the length direction of the asphalt mixture loading plate, and the rheometer sensor is located above the asphalt sample placement boxes.

[0010] It is further defined that a cleaning liquid holding tank is provided on the side of the asphalt sample placement box, and the cleaning liquid holding tank is located below the rheometer sensor. An electric telescopic rod is also provided in the test chamber, and the electric telescopic rod is arranged along the width direction of the asphalt mixture loading plate. The asphalt mixture loading plate is connected to the inner wall of the test chamber through the electric telescopic rod, and the electric telescopic rod is located below the asphalt sample placement box.

[0011] It is further defined that the bottom of the asphalt sample placement box is provided with an assembly clamping column, and the asphalt sample placement box is clamped with the asphalt mixture loading plate through the assembly clamping column.

[0012] It is further defined that a hot air blower is further provided in the test chamber, and the hot air blower is located below the horizontal moving mechanism and opposite to the vertical moving mechanism.

[0013] It is further defined that the lateral movement mechanism includes a servo motor, a screw rod, a limiting slide rod, a nut seat and a limiting slide sleeve;

[0014] The servo motor is connected to the inner wall of the test chamber, the output end of the servo motor is connected to one end of the screw rod, a casing is provided on the outside of the screw rod, the casing is connected to the inner wall of the test chamber, the other end of the screw rod is rotatably connected to the casing, the limiting slide rod is located in the casing, the limiting slide rod and the screw rod are arranged in the same direction, the nut seat is threadedly connected to the screw rod, the limiting sleeve is sleeved on the limiting slide rod, the nut seat is connected to the limiting sleeve, a second mounting plate is provided at the bottom of the limiting sleeve, the second mounting plate extends to the outside of the casing, and the second mounting plate is connected to the vertical moving mechanism.

[0015] It is further defined that the vertical moving mechanism includes a telescopic cylinder, a fixed seat and a motor; the telescopic cylinder is vertically arranged, and a first mounting plate is provided at the connecting end of the telescopic cylinder, the first mounting plate is connected to the second mounting plate, the fixed seat is connected to the output end of the telescopic cylinder, the motor is arranged inside the fixed seat, the output end of the motor passes through the fixed seat and extends to the bottom of the fixed seat, and the rheometer sensor is connected to the output end of the motor.

[0016] It is further defined that the vertical moving mechanism also includes a guide arm and a guide bearing, the guide bearing is connected to the bottom of the fixed seat, the guide bearing is coaxially arranged with the motor output end, the bottom of the guide arm is sleeved on the outside of the rheometer sensor, and the top of the guide arm is connected to the guide bearing.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. The utility model utilizes a lateral moving mechanism and a vertical moving mechanism to connect the rheometer sensor, which is used to conveniently control the test position of the rheometer sensor and the downward pressure test, thereby reducing the test difficulty and improving the test efficiency. At the same time, multiple samples to be tested can be placed on the asphalt mixture loading plate for continuous testing, further improving the test efficiency and meeting actual test needs.

[0019] 2. The utility model chooses to set up a cleaning liquid holding tank on one side of the asphalt sample placement box, which can remove impurities on the rheometer sensor by cleaning after the rheometer sensor completes a test, avoiding the impact on subsequent test results; at the same time, a hot air blower can be used to air-dry the cleaned rheometer sensor to avoid water stains affecting the test results, ensuring that the test reliability meets the test requirements.

[0020] 3. The utility model uses an electric telescopic rod to move the asphalt mixture loading plate to enable the rheometer sensor to be extended into the cleaning liquid storage tank for cleaning, which is convenient and quick to operate. At the same time, by providing an assembly column at the bottom of the asphalt sample placement box, it is convenient to disassemble and further improve the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the asphalt sample placement box of the utility model;

[0023] Figure 3 This is a schematic diagram of the vertical moving mechanism structure of the utility model;

[0024] Figure 4 This is a rear view structural diagram of the asphalt mixture loading plate of the utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the lateral movement mechanism of the utility model;

[0026] In the figure: 1. Asphalt mixture loading plate; 2. Rheometer body; 3. Limit slide; 4. Second mounting plate; 5. Housing; 6. Rheometer sensor; 7. Asphalt sample placement box; 8. Hot air blower; 9. Assembly column; 10. Cleaning liquid storage tank; 11. Motor; 12. Telescopic cylinder; 13. First mounting plate; 14. Fixed seat; 15. Guide bearing; 16. Guide arm; 17. Electric telescopic rod; 18. Servo motor; 19. Screw; 20. Nut seat; 21. Limit slide. DETAILED DESCRIPTION

[0027] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-5 The utility model provides a device for testing the rheological properties of asphalt mixture compaction, which includes a rheological tester body 2, a horizontal moving mechanism, a vertical moving mechanism, a rheometer sensor 6 and an asphalt mixture loading plate 1. A test chamber is opened in the rheological tester body 2, and a test door is provided on the test chamber to facilitate placing the sample to be tested in the test chamber or taking the sample to be tested out of the test chamber. The test door is closed during the test to avoid the influence of the external environment on the test chamber.

[0029] The transverse moving mechanism is connected to the top of the test chamber, the vertical moving mechanism is located in the test chamber, the vertical moving mechanism is connected to the transverse moving mechanism, the rheometer sensor 6 is connected to the bottom of the vertical moving mechanism, and an asphalt mixture loading plate 1 is placed in the test chamber. The asphalt mixture loading plate 1 and the transverse moving mechanism are arranged in the same direction. The asphalt mixture loading plate 1 is used to place the sample to be tested. The rheometer sensor 6 is located above the asphalt mixture loading plate 1, so that during the test, the vertical moving mechanism can drive the rheometer sensor 6 to compact the sample to be tested for testing; and the transverse moving mechanism drives the rheometer sensor 6 to move along the length direction of the asphalt mixture loading plate 1, so that different samples to be tested can be continuously tested, which is convenient to control and simple to operate, avoids frequent preparation of samples to be tested and test tools, and improves test efficiency.

[0030] Specifically, in order to facilitate the placement of samples to be tested, it is preferred to place multiple asphalt sample placement boxes 7 on the asphalt mixture carrier plate 1, and the multiple asphalt sample placement boxes 7 are arranged at intervals along the length direction of the asphalt mixture carrier plate 1. During testing, the rheometer sensor 6 is used to test the samples to be tested in each asphalt sample placement box 7 to complete the testing requirements of multiple samples to be tested.

[0031] In order to facilitate the removal and placement of the asphalt sample placement box 7, it is preferred to set an assembly clamp 9 at the bottom of the asphalt sample placement box 7, so that the asphalt sample placement box 7 is clamped with the asphalt mixture loading plate 1 through the assembly clamp 9, which is convenient for disassembly and installation, improves the preparation efficiency of the test material, and thus improves the test efficiency.

[0032] In order to improve the reliability and accuracy of the test results, a cleaning liquid holding tank 10 is selected to be set on one side of the asphalt sample placement box 7. Cleaning liquid is set in the cleaning liquid holding tank 10. In order to allow the rheometer sensor 6 to be cleaned by the cleaning liquid holding tank 10 after one test before the next test, the rheometer sensor 6 can be moved to the top of the cleaning liquid holding tank 10 by the driving device, or the cleaning liquid holding tank 10 can be moved to the bottom of the rheometer sensor 6 by the driving device.

[0033] It is preferred to set an electric telescopic rod 17 in the test room, and the electric telescopic rod 17 is set along the width direction of the asphalt mixture loading plate 1. One end of the electric telescopic rod 17 is connected to the inner wall of the test room, and the other end of the electric telescopic rod 17 is connected to the asphalt mixture loading plate 1, so that the asphalt mixture loading plate 1 can move the asphalt sample placement box 7 or the cleaning liquid holding tank 10 to the bottom of the rheometer sensor 6 under the drive of the electric telescopic rod 17, which is convenient for cleaning debris on the rheometer sensor 6 and also convenient for testing the next sample to be tested.

[0034] At the same time, in order to prevent the cleaning liquid from contaminating the sample to be tested in the next test, it is preferred to set a hot air blower 8 in the test chamber. The hot air blower 8 is located outside the horizontal moving mechanism and outside the vertical moving mechanism, and is used to air dry the rheometer sensor 6 to further improve the test reliability and accuracy.

[0035] Further explanation: the lateral movement mechanism includes a servo motor 18, a screw rod 19, a limit slide rod 3, a nut seat 20 and a limit slide sleeve 21. The servo motor 18 is connected at the top corner position of the test chamber. One end of the screw rod 19 is connected to the output end of the servo motor 18. A casing 5 is sleeved on the outside of the screw rod 19. One end of the casing 5 is connected to the connecting end of the servo motor 18. The other end of the casing 5 is connected to the inner wall of the test chamber. The other end of the screw rod 19 is rotatably connected to the corresponding end of the casing 5. The screw rod 19 is supported by the casing 5 to improve the structural stability.

[0036] A nut seat 20 is sleeved on the outer side of the screw rod 19, and the nut seat 20 is threadedly connected to the screw rod 19. The limit slide rod 3 is connected to the inside of the casing 5, and the limit slide rod 3 and the casing 5 are arranged in the same direction. A limit sleeve 21 is sleeved on the limit slide rod 3, and the limit sleeve 21 is connected to the nut seat 20, so that when the servo motor 18 drives the screw rod 19 to rotate, the nut seat 20 is limited by the limit sleeve 21 and slides back and forth along the length direction of the casing 5. At this time, the bottom of the limit sleeve 21 is connected to the second mounting plate 4, and the second mounting plate 4 extends through the casing 5 to the outside of the casing 5, and the second mounting plate 4 is connected to the vertical moving mechanism.

[0037] Further explanation: the vertical moving mechanism includes a telescopic cylinder 12, a fixed seat 14 and a motor 11. The connecting end of the telescopic cylinder 12 is provided with a first mounting plate 13. The telescopic cylinder 12 is connected to the second mounting plate 4 through the first mounting plate 13, so that the servo motor 18 can drive the telescopic cylinder 12 to move back and forth in the horizontal direction.

[0038] The output end of the telescopic cylinder 12 is connected to a fixing seat 14 , and the telescopic cylinder 12 drives the fixing seat 14 to move up and down.

[0039] A motor 11 is arranged in the fixing seat 14, and the output end of the motor 11 extends through the fixing seat 14 to the bottom of the fixing seat 14. The output end of the motor 11 is connected to the rheometer sensor 6. When in use, the output end of the telescopic cylinder 12 drives the rheometer sensor 6 to compact the sample to be tested, and then the motor 11 rotates to drive the rheometer sensor 6 to rotate during the test to perform a viscosity test to meet the test requirements.

[0040] In order to improve the structural stability of the rheometer sensor 6 during the test, a guide arm 16 is selected to be sleeved on the outside of the rheometer sensor 6. The top of the guide arm 16 is rotatably connected to the bottom of the fixed seat 14 through a guide bearing 15. The guide bearing 15 is sleeved on the outside of the output end of the motor 11, and the guide bearing 15 is coaxially arranged with the output end of the motor 11, so that the guide arm 16 can provide stable and reliable support for the rheometer sensor 6 during the compaction process; at the same time, when the rheometer sensor 6 rotates, it can rotate around the center of the guide bearing 15 to ensure stable and reliable rotation.

[0041] When using the embodiment of the present application:

[0042] With an external power supply, the user can sequentially place four different types of asphalt mixtures into the asphalt sample placement box 7 mounted on the asphalt mixture carrier plate 1 .

[0043] During actual operation, the servo motor 18 inside the casing 5 is started, and the transmission function formed by the screw rod 19 and the nut seat 20 inside the casing 5 can drive the rheometer sensor 6 to move left and right automatically, so that the rheometer sensor 6 is aligned with and extends into the four asphalt sample placement boxes 7 arranged at equal intervals on the asphalt mixture loading plate 1 in turn, so that the compaction rheological properties of different asphalt samples placed in the four asphalt sample placement boxes 7 can be tested in turn.

[0044] Moreover, each time the test processing of a sample is completed, the electric telescopic rod 17 will start and drive the asphalt mixture carrier plate 1 and the asphalt sample placement box 7 installed thereon to move forward and backward, so that the cleaning liquid holding tank 10 on the back of the asphalt sample placement box 7 is aligned with the rheometer sensor 6. Subsequently, the rheometer sensor 6 is extended into the cleaning liquid holding tank 10 through the telescopic cylinder 12 to complete the cleaning function, thereby avoiding the asphalt sample remaining on the rheometer sensor 6 after completing one test interfering with the test effect of the next sample. This enables the device to achieve high-precision testing of multiple asphalt samples at one time, improves work efficiency, and facilitates promotion.

[0045] In addition, starting the hot air blower 8 embedded in the rheology tester body 2 can perform hot air drying on the surface of the rheometer sensor 6, ensuring that the rheometer sensor 6 can be quickly dried after each cleaning and avoiding water stains affecting the test accuracy of the rheometer sensor 6.

[0046] Obviously, the embodiments described above are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0047] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0048] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A device for testing the rheological properties of asphalt mixture compaction, characterized in that: It comprises a rheological tester body (2), a lateral moving mechanism, a vertical moving mechanism, a rheological tester sensor (6) and an asphalt mixture loading plate (1); A test chamber is provided in the rheological tester body (2), the asphalt mixture loading plate (1) is arranged at the bottom of the test chamber, the transverse moving mechanism is arranged at the top of the test chamber, the transverse moving mechanism and the asphalt mixture loading plate (1) are arranged in the same direction, the vertical moving mechanism is connected to the transverse moving mechanism, the rheometer sensor (6) is connected to the bottom of the vertical moving mechanism, and the rheometer sensor (6) is located above the asphalt mixture loading plate (1).

2. The asphalt mixture compaction rheological properties testing device according to claim 1, characterized in that: A plurality of asphalt sample placement boxes (7) are provided on the asphalt mixture loading plate (1), and the plurality of asphalt sample placement boxes (7) are spaced apart along the length direction of the asphalt mixture loading plate (1), and the rheometer sensor (6) is located above the asphalt sample placement boxes (7).

3. The asphalt mixture compaction rheological properties testing device according to claim 2, characterized in that: A cleaning liquid storage tank (10) is provided on the side of the asphalt sample placement box (7), and the cleaning liquid storage tank (10) is located below the rheometer sensor (6). An electric telescopic rod (17) is also provided in the test chamber, and the electric telescopic rod (17) is arranged along the width direction of the asphalt mixture loading plate (1). The asphalt mixture loading plate (1) is connected to the inner wall of the test chamber through the electric telescopic rod (17), and the electric telescopic rod (17) is located below the asphalt sample placement box (7).

4. The asphalt mixture compaction rheological properties testing device according to claim 3, characterized in that: The bottom of the asphalt sample placement box (7) is provided with an assembly clamping column (9), and the asphalt sample placement box (7) is clamped with the asphalt mixture loading plate (1) via the assembly clamping column (9).

5. The asphalt mixture compaction rheological properties testing device according to claim 4, characterized in that: A hot air blower (8) is also provided in the test chamber. The hot air blower (8) is located below the horizontal moving mechanism and is opposite to the vertical moving mechanism.

6. The asphalt mixture compaction rheological properties testing device according to any one of claims 1 to 5, characterized in that: The lateral movement mechanism comprises a servo motor (18), a screw rod (19), a limiting slide rod (3), a nut seat (20) and a limiting slide sleeve (21); The servo motor (18) is connected to the inner wall of the test chamber, the output end of the servo motor (18) is connected to one end of a screw rod (19), a housing (5) is provided on the outer side of the screw rod (19), the housing (5) is connected to the inner wall of the test chamber, the other end of the screw rod (19) is rotatably connected to the housing (5), the limiting slide rod (3) is located in the housing (5), the limiting slide rod (3) and the screw rod (19) are arranged in the same direction, the nut seat (20) is threadedly connected to the screw rod (19), the limiting sleeve (21) is sleeved on the limiting slide rod (3), the nut seat (20) is connected to the limiting sleeve (21), a second mounting plate (4) is provided at the bottom of the limiting sleeve (21), the second mounting plate (4) extends to the outer side of the housing (5), and the second mounting plate (4) is connected to the vertical moving mechanism.

7. The asphalt mixture compaction rheological properties testing device according to claim 6, characterized in that: The vertical movement mechanism comprises a telescopic cylinder (12), a fixed seat (14) and a motor (11); the telescopic cylinder (12) is arranged vertically, a first mounting plate (13) is provided at the connecting end of the telescopic cylinder (12), the first mounting plate (13) is connected to the second mounting plate (4), the fixed seat (14) is connected to the output end of the telescopic cylinder (12), the motor (11) is arranged inside the fixed seat (14), the output end of the motor (11) passes through the fixed seat (14) and extends to the bottom of the fixed seat (14), and the rheometer sensor (6) is connected to the output end of the motor (11).

8. The asphalt mixture compaction rheological properties testing device according to claim 7, characterized in that: The vertical movement mechanism further includes a guide arm (16) and a guide bearing (15), wherein the guide bearing (15) is connected to the bottom of the fixed seat (14), the guide bearing (15) is coaxially arranged with the output end of the motor (11), the bottom of the guide arm (16) is sleeved on the outside of the rheometer sensor (6), and the top of the guide arm (16) is connected to the guide bearing (15).

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